I bought two of those guns from a distributor in Germany in the late 1960s. One was 30-06 the other was .308 Norma Magnum. The 30-06 was accurate for the first two shots, (fine for hunting) but would string vertically for a foot on repeat shots with heated barrell. I pillar bedded, glassed, etc etc to no avail. I figure it must be some anomaly in the barrell density on one side (top or bottom).
The .308 Norma Magnum is a tack driver. Group at 100 yrds from a hand hold from a bench, (no bags) is about a half an inch. Unbelievable.
For those who don't know the .308 Norma Mag, it is almost identical ballisticaly to the Winchester 300 magnum. It was developed by Norma before the Winchester round. Rifles for the Norma round are not found often as it never did become popular, but is an excellent round.
Cogito, ergo armatum sum